subsys/debug: remove CONFIG_EXCEPTION_STACK_TRACE_SYMTAB

Having `CONFIG_EXCEPTION_STACK_TRACE_SYMTAB` to select the
`CONFIG_SYMTAB` or to explicitly not print the symbol name
during exception stack unwind seems unnecessary, as the extra
code to print the symbol name is negligible when compared with
the symbol table, so just remove it.

Signed-off-by: Yong Cong Sin <ycsin@meta.com>
Signed-off-by: Yong Cong Sin <yongcong.sin@gmail.com>

arch/riscv/core/stacktrace.c

@@ -248,20 +248,20 @@ static bool in_fatal_stack_bound(uintptr_t addr, const struct k_thread *const th
 #define PR_REG "%016" PRIxPTR
 #endif
 
-#ifdef CONFIG_EXCEPTION_STACK_TRACE_SYMTAB
+#ifdef CONFIG_SYMTAB
 #define LOG_STACK_TRACE(idx, ra, name, offset)                                                     \
 	LOG_ERR("     %2d: ra: " PR_REG " [%s+0x%x]", idx, ra, name, offset)
 #else
 #define LOG_STACK_TRACE(idx, ra, name, offset) LOG_ERR("     %2d: ra: " PR_REG, idx, ra)
-#endif /* CONFIG_EXCEPTION_STACK_TRACE_SYMTAB */
+#endif /* CONFIG_SYMTAB */
 
 static bool print_trace_address(void *arg, unsigned long ra)
 {
 	int *i = arg;
-#ifdef CONFIG_EXCEPTION_STACK_TRACE_SYMTAB
+#ifdef CONFIG_SYMTAB
 	uint32_t offset = 0;
 	const char *name = symtab_find_symbol_name(ra, &offset);
-#endif
+#endif /* CONFIG_SYMTAB */
 
 	LOG_STACK_TRACE((*i)++, ra, name, offset);
 

subsys/debug/Kconfig

@@ -387,15 +387,6 @@ config EXCEPTION_STACK_TRACE
 	  print a stack trace of function memory addresses when an
 	  exception is reported.
 
-config EXCEPTION_STACK_TRACE_SYMTAB
-	bool "Print function names in the stack trace"
-	select SYMTAB
-	depends on EXCEPTION_STACK_TRACE
-	help
-	  Enable this if you want to print the function names in the
-	  stack trace output. This will generate the symtab and
-	  can consume a lot of ROM if there's a lot of functions.
-
 #
 # Miscellaneous debugging options
 #

tests/arch/common/stack_unwind/testcase.yaml

@@ -68,7 +68,7 @@ tests:
       - qemu_cortex_a53
     extra_configs:
       - CONFIG_FRAME_POINTER=y
-      - CONFIG_EXCEPTION_STACK_TRACE_SYMTAB=y
+      - CONFIG_SYMTAB=y
     harness_config:
       type: multi_line
       regex: